Comgination-tool holder



- (No Model.)

P. A. GERRY. COMBINATION TOOL HOLDER.

No. 393,698. 8 Pad-tented Nov. 27. 1888.

N. PETER Ph'olcrLilhcgnphlr. Wuhington. D. C.

I UNITED S'FZATES Fric.

PATENT COMBINATION-TOOL HOLDER.

SPECIFICATION forming part of Letters Patent No. 393,698, dated November 27, 1888.

Application filed May 23, 1888. Serial No. 274,830.

, rocating lever, the object of my improvement being to provide an instrument which may be immediately convertible into manifold uses through its interchangeable construction and especially adapted to the various uses of a reamer, center-bit, bolt-wrench, drill-holder, screw-driver, 850., as severally illustrated in the annexed drawings, forming a part oLth-isM specification,wherein- Figure l is a linear perspective of my combination-tool holder separably attached to a bolt-wrench consisting of the ordinary sliding v jaws controlled by a right-and-left threaded adjustingscrew. Fig. 2 exhibits a like perspective, a part broken away, the stock secured in the handle and sustaining a drill with an auxiliary support indicated in dotted lines. Fig. 3 is a view with the stock attached,its geared head,with the actuating-lever pawls appearing in dotted lines, and a centerbit inserted in the stock. Fig. 4. indicates a perspective view of the retracting-collet. Fig. 5 designates the rotaining-plate,with the supporting-screw in dotted lines. Fig. 6 exhibits a perspective of the tool-holder, the retaining-plate removed to show the position of the lever pawls, the right engaging with the ratchet-head of thestock, which in this view sustains a reamer. Fig. 7 delineates in perspective a half-section transversely Vertical of said tool-holder, the retaining-plate removed to better display the'recesses confining the lever-pawls, (one of the latter removed therefrom,) and the helical springs actuating said pawls seated in their respective positions; and Fig. 8, a transverse vertical central section through said tool-holder and the bolt-wrench as would appear on the dotted line 22, Fig. 1, in the assemblage of these parts.

The function of the various parts,with their construction and relation,will be fully comprehended by referring to the drawings,i11 Which- (No model.)

A indicates the tool-holder proper, and B the retaining-plate thereon secured by the screws 0. The interior of said holder is circularly chambered, as at D, Fig. 7, to receive the stock holding the Various implements before mentioned used in connection therewith and which are actuated through the medium of right-and-left rock-leverv pawls E E, as they are caused to engage with the geared head F of the various stocks G, of which there may be diverse patterns applicable to various tools and uses, as previously mentioned. Said rocklever pawls E E are seated within depressions H H, conforming to such a degree with said lever-pawls as to admit a slight oscillatory motion to them, imparted by right-and-left helical springs I I, seated within circular recesses J J and expanding against the rear arms of these lever-pawls, while otherwise, in conjunction with said retaining-plate B, they are confined to the part A, as exhibited in Fig. 3. The peculiar construction of said depressions,with that of the lever-pawls, obviates the use of pivotal bearings, the projections KK, in the assemblage of the parts, lying in juxtaposition, so that the former, K, acts as the fulcra for the latter, K. It will be observed that said depressions H H extend downward from the plane of the offset L, Fig. 7, contiguous to the lower plane, M, of the plate 13, Fig. 5, when the parts are united.

In the manipulation of the rocklever pawls I provide a retracting milled collet, (designated as N, Fig. 4,) which surrounds the neck 0 of the tool adjacent to the handle 1?, and on which it is rotated by manual pressure to circumscribe the motion alternately orsimultaneously of the arms E E I accomplish this by forming within the overlapping rim Q, which covers the rear portion of said roclelever pawls, two re-entering slots, R R, double the width of the pawl-arms E E, with which they coact, that one may be confined while the one opposite may be unconfined, or that both may be liberated, if desired. An additional mortise, S, upon the edge remote from the rim Q serves in conjunction witha stop or stud, T, projecting from the elongated neck B of said retaining-plate, to limit the rotation of said collet.

U indicates my improved tang, over which the handle P, of any suitable material, if not integral with the holder, may be confined by the usual nut and thread, as at V.

In the manufacture of my combinationtool holder I may find it incumbent to modify in some degree without departing from the spirit of my invention the method of confining my.

stock G thereto, as exemplified in the supporting-screw \V, Figs. 2 and 5. To obviate any tendency said screw may have to bind the stock to the tool-holdcr, thereby impeding its free rotation, I construct the externallythread ed supporting-screw of sufficient length that when firmly seated in the internallythreaded geared head of the stock the shoulder of the screw will project slightly above and over the retaining-plate B, so as to support the same and to avoid friction of the parts, offering no resistance to the proper manipulation of the tool designed for the use of heavy implements in contradistinction to the light nut and thread X, forming an integral part of said socket, as exhibited in section,Fig. 8. In a like manner a modification of my stock might occur, as between Figs. 2 and 8, the former being adjustable to multiform diameters of angers, center-bits, &c., the shanks of which would ordinarily suit one stock, while the latter would be more convenient if united to the adjustable implement therein illustrated.

The practical operation of my invention I will briefly describe, assuming the employmeut of the drill, as in Fig. 2, the chambcrD being empty, as observed in Fig. 7, but otherwise organized for the work it is to perform. The operator then thrusts the geared head F of the stock G into said chamber D, compressing meanwhile the arms E of the loose lever-pawls Einwardly, that their working ends may offer no obstruction to the free ingress of the stock, which latter is then secured by the supporting-screw IV, (or in the use of the lighter instruments the nut X,) while the lever-pawls engage with said head F. Should it be desired to operate the drill to the right, then the arm E is confined by the partial rotation of the retraetor N, as in Fig. 6, the expansion-spring I, Fig. 7, forcing outward the arm E, thus engaging the working end or nose of the leverpawl E to actuate said drill through the reciprocating movement of the handle. The reverse order of this arrangement obviously rotates the drill to the left.

I am aware that duplex pivoted pawls and ratchets are unitedly in common usefor example, in ratchet-wrenches, as exemplified in the United States Patent No. 335,481, dated February 2, 1886. I am further aware that pawl-retractors of a segmental construction are usedon implements of the kind mentioned, as evidenced in the United States Patent N 0. 313,628, of date June 15, 1886, as also the use of non-removable stock in similar applications, notably United States Patent No. 82,962, October 13, 1868. I therefore do not claim such features, broadly; but

\Vhat I desirc to secure by Letters Patent, and claim, is-

1. A combination-tool receptacle consisting of the following elements: a tang constructed with a circular head, A, provided with a vertical receiving-chamber, I), the upper plane of the side walls thereof being provided with depressions II II, substantially as shown, the pivoilcss rocker-pawls E E, constructed to be therein adjusted, and further provided integrally upon their inner faces with projections K K, designed to abut against similar projections, K K, forming .a part of said depres-ions, to permit said pawls to be depressed, the helical springs I I, actuating said pawls, the rctractor N provided with duplcx re-entering slots R R, adapted to contine or release said pawls, and a re-entcring mortise, S, to restrict its rotation, the internally-threaded stock G, provided with a geared periphery, F, adapted to coact with said pawls, and a conical recess to receive the va rious implements to be used therewith, all constructed and assembled to operate substantially as specified.

2. In a combination-tool receptacle, a tang, U, provided with a semicircular offset, L, terminating in a vertical circular chamber, 1),

the duplex depressions II H in the side walls 9 thereof, the projections K K, forming an element of said depressions, and the recesses J, arranged and constructed to operate in combination with an interchangeable tool stock, G, having a geared head, F, integral therewith, provided at its upper end with a threaded cavity longitudinally for its support to said tang and at its lower end with a converging cavity to receive the cutting-tool, the screw IV, supporting said stock, the pivotlcss leverpawls E E, provided with shoulders K K, the means, substantially as described,whereby they receive an oscillatory motion, the retractiug-collet N, and the retaining-plate I provided with a stud, 'l, to restrict the rotation of said collet, in the manner and for the purpose set forth.

3. In combination with a tang, substantially as described, the retaining-plate B, pro vided with an elongated neck, B, upholding a stud, T, and further provided with a central perforation for the admission of a supportingscrew, IV, the retractor N, provided with duplex re-entering slots It It on opposite sides of its periphery adjacent to said lever-pawls, and a re-entering mortise, S, within the rear periphery, the pivotlcss rock-lever pawls E E, geared stock G, and springs I I, as and for the purpose specified.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 19th day ofMay, A. D. 1888.

IERLEY A. GERRY.

\Vitncsses:

J onN T. PieIcLns, Z. TAYLOR MERRILL. 

